Insidiously

What is Insidiously?

Insidiously definition and meaning on Dictionary terms:
adjective
intended to entrap or beguile: an insidious plan.
stealthily treacherous or deceitful: an insidious enemy.
operating or proceeding in an inconspicuous or seemingly harmless way but actually with grave effect: an insidious disease.

 

reference: https://www.dictionary.com/browse/insidiously

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